Device for eliminating abnormal air leakage noise of anti-surge valve
By installing a check valve in the drain pipe at the outlet of the anti-surge valve and using a multi-hole plate to slow down the gas flow rate, the abnormal noise problem caused by the anti-surge valve under small and medium load conditions is solved, and the noise is effectively reduced without affecting the normal function of the anti-surge valve.
Patent Information
- Application Number
- CN202422089990.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-27
- Publication Date
- 2025-05-20
- Estimated Expiration
- 2034-08-27
AI Technical Summary
When the engine is in a small and medium-load state, abnormal air discharge noise from the anti-surge valve will be transmitted through the intake system, resulting in abnormal noise.
Install a check valve in the drain pipe at the anti-surge valve outlet, and use the multi-porous plate in the check valve to slow down the gas flow rate and make it evenly distributed, thereby reducing abnormal noise.
It effectively reduces abnormal noise caused by anti-surge valves at small loads, and does not affect the normal function of anti-surge valves under medium and high loads.
Smart Images
Figure CN222887067U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of engine control technology, in particular to a device for eliminating abnormal air leakage noise of an anti-surge valve. Background Technology
[0002] The statements in this section merely provide background information related to the utility model and do not necessarily constitute prior art.
[0003] Surge is when the throttle of the engine is closed instantly, the pressure in the intake pipe increases instantly, causing abnormal vibration and causing the supercharger to surge. Surge can damage the supercharger, intercooler and intake pipe. In order to alleviate the damage caused by surge, the existing technology will configure an anti-surge valve in the engine. When the anti-surge valve is opened, the excess pressure is released to the atmosphere or the intake duct of the supercharger.
[0004] When the engine is in a small or medium load state, the throttle opening is small, which is more likely to cause surge, so the anti-surge valve will remain open. In this state, the gas and sound waves after the intercooler will leak into the vehicle's intake system through the anti-surge valve's bleed pipe, thereby generating abnormal noise. Contents of utility model
[0005] In order to solve the technical problems existing in the above-mentioned background technology, the utility model provides a device for eliminating abnormal gas leakage noise of the anti-surge valve. A one-way valve is installed in the discharge pipe at the outlet of the anti-surge valve. When the anti-surge valve is normally open under low load, the porous plate in the one-way valve is used to slow down the gas flow rate in the discharge pipe and make it evenly distributed, thereby reducing abnormal noise. At the same time, under medium and high loads, the gas discharged from the anti-surge valve can also push open the valve core of the one-way valve without affecting the normal anti-surge function.
[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0007] The utility model provides a device for eliminating abnormal air leakage noise of an anti-surge valve, comprising a one-way valve connected to a hose, wherein the hose is connected to a discharge pipe of the anti-surge valve;
[0008] The one-way valve includes a valve body connected to a hose, the valve body and the valve core are arranged coaxially, the valve core is connected to a spring, a porous plate for accommodating the passage of gas is provided on the valve body, a guide is provided on the surface of the porous plate, and the valve core and the valve body are closed by the pushing action of the spring and the guiding action of the guide.
[0009] Furthermore, the valve body is a hollow cylindrical structure, the middle part with a larger diameter accommodates the valve core, spring, guide and porous plate, and the parts with smaller diameters at both ends are connected to the hose.
[0010] Furthermore, a sealing surface is provided at one end of the valve body near the inlet for receiving the end surface pressure from the valve core to achieve sealing, and a porous plate is connected to one end of the valve body near the outlet.
[0011] Furthermore, the valve core includes a connecting column and a valve core plate and a spring seat located at both ends of the connecting column, and the connecting column, the valve core plate and the spring seat are arranged coaxially.
[0012] Furthermore, a sealing surface is provided on the valve core plate, which is used to cooperate with the sealing surface of the valve body inlet, so as to achieve sealing when the valve core plate is pressed against the valve body inlet.
[0013] Furthermore, one side of the porous plate faces the outlet of the valve body, and the other side is connected to the guide member, which is sleeved with the spring seat to form a cavity for accommodating the spring inside the spring seat.
[0014] Furthermore, one end of the spring abuts against the surface of the porous plate, and the other end abuts against the spring seat of the valve core. The sealing surface of the valve core is arranged toward the sealing surface of the valve body inlet. When the gas pressure at the valve body inlet is greater than the elastic force of the spring, the spring is compressed to separate the valve core and the valve body inlet, and the one-way valve opens; otherwise, the one-way valve closes.
[0015] Furthermore, the guide is a cylindrical structure with one end open and the other end connected to the surface of the porous plate. The spring seat of the valve core is sleeved inside the guide. When the spring moves the valve core, the valve core is guided to always move along the axis of the guide and the valve core spring seat.
[0016] Furthermore, the porous plate is connected to the inside of the valve body, and has at least two groups of through holes arranged concentrically on the surface, and each group of through holes is arranged in a circular ring shape.
[0017] Furthermore, the through holes away from the outside of the center of the circle are used to allow gas to pass through the area outside the guide member, and the through holes near the center of the circle allow gas to pass through the area inside the guide member.
[0018] Compared with the prior art, one or more of the above technical solutions have the following beneficial effects:
[0019] 1. Install a one-way valve in the discharge pipe at the outlet of the anti-surge valve. When the anti-surge valve is normally open at a small load, use the porous plate in the one-way valve to slow down the gas flow rate in the discharge pipe and distribute it evenly, thereby reducing abnormal noise. At the same time, under medium and high loads, the gas discharged from the anti-surge valve can also push open the valve core of the one-way valve without affecting the normal anti-surge function.
[0020] 2. The bleed pipe has a certain length and can thus accommodate a certain amount of gas. When under a small load, the anti-surge valve, which is normally open, continuously vents a small amount of gas into the bleed pipe. This part of the gas has a certain flow rate, and when it flows to the intake pipe, the generated noise will be transmitted along the intake system. After installing the check valve, only when this part of the gas accumulates to a certain pressure will it push open the check valve and vent it into the subsequent pipeline. Before the pressure reaches the opening pressure of the spring, the gas will be confined in the bleed pipe and will not flow. When the gas passes through the through holes of the perforated plate in the check valve, the flow rate of the gas is weakened by the obstruction of the through holes. At the same time, the porous structure improves the uniformity of gas distribution, thereby being able to reduce the abnormal noise problem caused by the anti-surge valve that is normally open under a small load. At the same time, when suddenly releasing the throttle under medium and high load conditions, the anti-surge valve opens, and higher-pressure gas is discharged into the bleed pipe to push open the check valve. Without affecting the exhaust function of the anti-surge valve, it can slow down the gas flow rate, improve the gas flow uniformity, and reduce the exhaust noise. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] The accompanying drawings forming a part of this utility model are used to provide a further understanding of the utility model. The schematic embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an improper limitation of the utility model.
[0022] Figure 1 is a schematic structural diagram of the device for eliminating abnormal exhaust noise of the anti-surge valve provided by the utility model.
[0023] Figure 2 is a schematic structural diagram of the rendered structure of the device for eliminating abnormal exhaust noise of the anti-surge valve provided by the utility model;
[0024] Figure 3 is a schematic diagram of the installation position of the device for eliminating abnormal exhaust noise of the anti-surge valve provided by the utility model.
[0025] In the figure: 1 valve body, 2 valve core, 3 spring, 4 guide, 5 perforated plate, 6 post-intercooler pipeline, 7 anti-surge valve, 8 bleed pipe, 9 hose, 10 check valve. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0026] The following further illustrates the utility model in conjunction with the drawings and embodiments.
[0027] It should be noted that the following detailed descriptions are all exemplary and are intended to provide further explanations of the utility model. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the utility model belongs.
[0028] It should be noted that the terms used here are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present invention. As used here, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "include" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or their combinations.
[0029] As introduced in the background technology, when the engine is in a small or medium load state, the throttle opening is small, which is more likely to cause surge, so the anti-surge valve will remain open. In this state, the gas and sound waves after the intercooler will leak into the vehicle's intake system through the anti-surge valve's bleed pipe, thereby generating abnormal noise.
[0030] Therefore, the following embodiment provides a device for eliminating abnormal gas leakage noise of the anti-surge valve. A one-way valve is installed in the discharge pipe at the outlet of the anti-surge valve. When the anti-surge valve is normally open under low load, the perforated plate in the one-way valve is used to slow down the gas flow rate in the discharge pipe and make it evenly distributed, thereby reducing abnormal noise. At the same time, under medium and high loads, the gas discharged from the anti-surge valve can also push open the valve core of the one-way valve without affecting the normal anti-surge function.
[0031] Example 1:
[0032] A device for eliminating abnormal air leakage noise of an anti-surge valve, comprising a one-way valve connected to a hose, wherein the hose is connected to a discharge pipe of the anti-surge valve;
[0033] If Figure 1 As shown, the one-way valve includes a valve body 1 connected to a hose 9, the valve body 1 and the valve core 2 are arranged coaxially, the valve core 2 is connected to a spring 3, under the pushing action of the spring 3 and the guiding action of the guide member 4, the sealing surface of the valve core 2 and the valve body 1 is closed to achieve closure, and a porous plate 5 is provided on the valve body 1 to accommodate the passage of gas, and when the gas passes through the porous structure, the air flow velocity is slowed down to improve the uniformity of the air flow and reduce the noise of air leakage.
[0034] If Figure 2 As shown, a sealing surface is provided at one end of the valve body 1 near the inlet, which is used to receive the end surface pressure from the valve core 2 to achieve sealing. A porous plate 5 is connected to one end of the valve body 1 near the outlet. One side of the porous plate 5 faces the outlet of the valve body 1, and the other side is connected to a guide 4. A spring 3 is provided inside the guide 4. One end of the spring 3 abuts against the surface of the porous plate 5, and the other end abuts against the valve core 2. The sealing surface of the valve core 2 faces the sealing surface of the inlet of the valve body 1.
[0035] The valve body 1 is a hollow cylindrical structure. The middle part with a larger diameter accommodates the valve core 2, the spring 3, the guide 4 and the porous plate 5, and the parts with smaller diameters at both ends are connected to the hose 9.
[0036] The valve core 2 includes a connecting column, a valve core plate and a spring seat located at both ends of the connecting column, and the connecting column, the valve core plate and the spring seat are coaxially arranged. A sealing surface is provided on the valve core plate for cooperating with the seal at the inlet of the valve body 1 to achieve sealing when the valve core plate is pressed against the inlet of the valve body 1; the spring seat is used to accommodate the spring 3 and receive the elastic force from the spring 3, so that the valve core plate is pressed against the inlet sealing surface of the valve body 1.
[0037] The spring 3 is located in the spring seat of the valve core 2, with one end abutted against the surface of the porous plate 5 and the other end abutted against the spring seat of the valve core 2. When the gas pressure at the inlet of the valve body 1 is greater than the elastic force of the spring 3, the spring 3 is compressed so that the valve core 2 and the inlet of the valve body 1 are separated, and the one-way valve 10 is opened, allowing the gas to flow from the inlet of the valve body 1 through the porous plate 5 towards the outlet; when the gas pressure at the inlet of the valve body 1 is not greater than the elastic force of the spring 3, the valve core 2 is closed under the action of the spring, and the gas cannot flow from the outlet towards the inlet, realizing one-way conduction.
[0038] The guide member 4 is a cylindrical structure with one end open and the other end connected to the surface of the porous plate 5. The spring seat of the valve core 2 is sleeved inside the guide member 4. Since both are cylindrical structures, a guiding function is formed, and a cavity for accommodating the spring 3 is formed with the spring seat of the valve core 2 during guiding. When the spring 3 acts to push the valve core 2 to move, it can guide the valve core 2 to always move along the axis of the guide member 4 and the spring seat of the valve core 2, ensuring that the sealing surface of the valve core 2 and the sealing surface of the valve body 1 are closely fitted, thereby achieving sealing.
[0039] The porous plate 5 is a circular plate connected inside the valve body 1, or it can be a plate of other shapes, specifically depending on the cross-sectional shape of the valve body 1. Considering stress balance, a circle is selected in most cases. At least two groups of through holes arranged concentrically are provided on the surface of the porous plate 5. Each group of through holes is arranged in a circular ring on the surface of the porous plate 5. The through holes far from the center on the outside are used to allow the gas to pass through the area outside the guide member 4, and the through holes near the center allow the gas to pass through the area inside the guide member 4.
[0040] When the one-way valve 10 is in the open state, the gas flows from the inlet of the valve body 1 to the outlet of the valve body 1. During this period, the gas passes through the through holes far from the center of the porous plate 5.
[0041] When the one-way valve 10 is in the closed state, gas cannot flow from the inlet of the valve body 1 to the outlet of the valve body 1. During the period when gas flows from the outlet of the valve body 1 to the inlet of the valve body 1, the gas passes through the through-holes at the position far from the center of the circle and the through-holes at the position close to the center of the circle of the porous plate 5 respectively. Among them, when the gas passes through the through-hole far from the center of the circle, it is blocked by the closed valve core 2, so that it cannot flow out from the inlet of the valve body 1; when the gas passes through the through-hole close to the center of the circle, it enters the space formed by the guide member 4 and the spring seat of the valve core 2, helping the spring to push the valve core 2 to further press against the inlet of the valve body 2, and further preventing the gas from flowing out from the inlet of the valve body 1.
[0042] As Figure 3 shown, the one-way valve 10 is connected in the discharge pipe 8 at the outlet of the anti-surge valve 7, and the anti-surge valve 7 is connected to the post-intercooling pipeline 6. When identifying the pressure in the intercooling pipeline under the conditions of small vehicle load and surge working conditions, the opening pressure of the one-way valve 10 is designed according to this pressure range, so as to prevent the anti-surge valve from opening and discharging gas in the small load state, and not affect the anti-surge effect of the anti-surge valve under medium and high loads.
[0043] When suddenly releasing the accelerator pedal under medium and high load conditions, the anti-surge valve 7 opens to discharge gas, and the discharge pressure acts on the valve core 2. When reaching the opening pressure of the spring 3, the valve core 2 opens to exhaust gas.
[0044] Under small load conditions, the anti-surge valve 7 is in the normally open state. At this time, the discharge pressure is relatively small and cannot reach the opening pressure of the spring 3, so the anti-surge valve 7 cannot discharge gas into the subsequent pipeline, thus avoiding the abnormal noise problem caused by gas discharge.
[0045] Since the discharge pipe 8 has a certain length, it can accommodate a certain amount of gas. Under small load conditions, the anti-surge valve 7 in the normally open state will continuously discharge a small amount of gas into the discharge pipe 8. This part of the gas has a certain flow rate, and when flowing to the intake pipe, the generated noise will be transmitted along the intake system. After the one-way valve 10 is set, only when this part of the gas accumulates to a certain pressure, will it push open the one-way valve 10 and discharge it into the subsequent pipeline. Before the pressure reaches the opening pressure of the spring 3, the gas will be sealed in the discharge pipe 8 and will not flow. When the gas passes through the through-holes of the porous plate 5 in the one-way valve 10, the flow rate of the gas is weakened by the blockage of the through-holes, and at the same time, the porous structure improves the uniformity of gas distribution, so as to weaken the abnormal noise problem caused by the anti-surge valve 7 in the normally open state under small load conditions. At the same time, when suddenly releasing the accelerator pedal under medium and high load conditions, the anti-surge valve 7 opens, and higher-pressure gas is discharged into the discharge pipe 8 to push open the one-way valve 10. Without affecting the exhaust function of the anti-surge valve 7, it can slow down the gas flow rate, improve the gas uniformity, and weaken the exhaust noise.
[0046] The hose 9 can be a rubber hose, which is used to absorb the vibrations generated during the action and gas flow, and further reduce the noise impact.
[0047] The check valve 10 is similar in external structure to the drain pipe 8, so it is not likely to cause structural interference problems.
[0048] Through actual measurement, with the maximum value of the pipe pressure (130 kPa) in the vehicle's small load state and the minimum value of the pipe pressure (200 kPa) when surge occurs as the boundaries, the opening pressure of the check valve spring is determined to be 150 kPa, thereby preventing the surge prevention valve from discharging air to the pipe before the compressor in the small load state.
[0049] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.
Claims
1. A device for eliminating abnormal air leakage noise of an anti-surge valve, characterized in that: It includes a one-way valve connected to a hose, and the hose is connected to a discharge pipe of the anti-surge valve; The one-way valve includes a valve body connected to a hose. The valve body and the valve core are arranged coaxially. The valve core is connected to a spring. A porous plate for accommodating the passage of gas is provided on the valve body. A guide member is provided on the surface of the porous plate. Through the pushing action of the spring and the guiding action of the guide member, the valve core and the valve body are closed.
2. A device for eliminating abnormal air leakage noise of an anti-surge valve as claimed in claim 1, characterized in that: The valve body is a hollow cylindrical structure, wherein a portion with a larger diameter in the middle accommodates a valve core, a spring, a guide member and a porous plate, and portions with smaller diameters at both ends are connected to hoses.
3. The device for eliminating abnormal air leakage noise of an anti-surge valve according to claim 1, characterized in that: A sealing surface is provided at one end of the valve body near the inlet for receiving the end surface pressure from the valve core to achieve sealing, and a porous plate is connected to one end of the valve body near the outlet.
4. The device for eliminating abnormal air leakage noise of an anti-surge valve according to claim 1, characterized in that: The valve core comprises a connecting column and a valve core plate and a spring seat located at two ends of the connecting column. The connecting column, the valve core plate and the spring seat are coaxially arranged.
5. A device for eliminating abnormal air leakage noise of an anti-surge valve as claimed in claim 4, characterized in that: The valve core plate is provided with a sealing surface for cooperating with the sealing surface of the valve body inlet, so as to achieve sealing when the valve core plate is pressed against the valve body inlet.
6. The device for eliminating abnormal air leakage noise of an anti-surge valve according to claim 1, characterized in that: One side of the porous plate faces the outlet of the valve body, and the other side is connected to a guide member, which is sleeved with a spring seat to form a cavity for accommodating a spring inside the spring seat.
7. The device for eliminating abnormal air leakage noise of an anti-surge valve according to claim 1, characterized in that: One end of the spring abuts against the surface of the porous plate, and the other end abuts against the spring seat of the valve core. The sealing surface of the valve core is arranged toward the sealing surface of the valve body inlet. When the gas pressure at the valve body inlet is greater than the elastic force of the spring, the spring is compressed to separate the valve core and the inlet of the valve body, and the one-way valve opens; otherwise, the one-way valve is closed.
8. The device for eliminating abnormal air leakage noise of an anti-surge valve according to claim 1, characterized in that: The guide member is a cylindrical structure with one end open and the other end connected to the surface of the porous plate. The spring seat of the valve core is sleeved inside the guide member. When the spring acts to push the valve core to move, the valve core is guided to always move along the axis of the guide member and the valve core spring seat.
9. The device for eliminating abnormal air leakage noise of an anti-surge valve according to claim 1, characterized in that: The porous plate is connected to the inside of the valve body, and has at least two groups of through holes arranged concentrically on its surface, each group of through holes being arranged in a circular ring shape.
10. The device for eliminating abnormal air leakage noise of an anti-surge valve according to claim 9, characterized in that: The through holes away from the outside of the center of the circle are used to allow gas to pass through the area outside the guide member, and the through holes close to the center of the circle allow gas to pass through the area inside the guide member.